Porcaro A.B.,Urology Clinic
Urologia Internationalis | Year: 2014
Background: Benign prostatic hyperplasia and prostate cancer (PCA) alter the normal growth patterns of zonal anatomy with changes of prostate volume (PV). Chronic inflammatory infiltrates (CII) type IV are the most common non-cancer diagnosis of the prostate after biopsy. Objective: To evaluate associations of both PV index (PVI), i.e. the ratio of transitional zone volume (TZV) to peripheral zone volume (PZV), and CII with PCA in patients undergoing biopsy. Subjects and Methods: Between January 2007 and December 2008, 268 consecutive patients who underwent prostate biopsy were retrospectively evaluated. PV and TZV were measured by transrectal ultrasound. PZV was computed by subtracting the PV from the TZV. CII were evaluated according to standard criteria. Significant associations of PVI and the presence of CII (CII+) with PCA risk were assessed by statistical methods. Results and Limitations: We evaluated 251 patients after excluding cases with painful rectal examinations, prostate-specific antigen (PSA) >20 μg/ml and metastases. The PCA detection rate was 41.1%. PVI was a negative independent predictor of PCA. A PVI ≤1.0 was directly [odds ratio (OR) = 2.36] associated with PCA, which was detected more frequently in patients with a PVI ≤1.0 (29.1%) than in those with a PVI >1.0 (11.9%). CII+ was inversely (OR = 0.57) and independently associated with PCA, which was detected less frequently in cases with CII (9.9%) than in those without CII (21.1%). Potential study limitations might relate to the fact that PV was not measured by prostatectomy specimens and there was PSA confounding for CII and PCA. Conclusions: Low values of PVI are directly associated with risk of PCA, which was almost 2.5 times higher in patients with a PVI ≤1.0. The PVI might be an effective parameter for clustering patients at risk of PCA. CII+ was inversely associated with risk of PCA and decreased the probability of detecting PCA by 43%. The role of the PVI and CII in PCA carcinogenesis needs further research. © 2014 S. Karger AG, Basel.
Argyropoulos A.N.,Urology Clinic |
Tolley D.A.,Scottish Lithotriptor Center
Current Opinion in Urology | Year: 2010
Purpose of Review: Shockwave lithotripsy (SWL) is considered as an initial option for a significant proportion of urinary tract stones. Despite efforts for standardized terminology and methodology, published studies on lithotripsy outcome are very different. This review will focus on a brief description of evidence-based medicine and recent literature results on SWL outcome. Recent Findings: The introduction of hierarchy in scientific evidence is becoming more widespread. Various grading systems have attempted to rank recommendations according to type and amount of evidence. Different levels of evidence have been created for therapy, diagnosis and prognosis. Various authors have developed scoring systems and identified radiographic parameters to predict SWL outcome. The long-term safety of lithotripsy on renal function has been demonstrated. Randomized controlled trials and meta-analysis have shown that medical expulsive therapy and a slower shockwave rate will improve SWL outcome. Summary: Evidence-based medicine is rapidly becoming an indispensable part of everyday medical practice. Common terminology is necessary for proper evaluation of SWL. Different types of studies are required to investigate efficacy, compare SWL to other options, complications and so on. Randomized clinical trials are of the highest value; matched-pair analyses and well designed controlled studies can offer significant help. © 2010 Wolters Kluwer Health | Lippincott Williams & Wilkins.
Bilek R.,Institute of Endocrinology |
Bicikova M.,Institute of Endocrinology |
Safarik L.,Urology Clinic
Physiological Research | Year: 2011
TRH-like peptides are characterized by substitution of basic amino acid histidine (related to authentic TRH) with neutral or acidic amino acid, like glutamic acid, phenylalanine, glutamine, tyrosine, leucin, valin, aspartic acid and asparagine. The presence of extrahypothalamic TRH-like peptides was reported in peripheral tissues including gastrointestinal tract, placenta, neural tissues, male reproductive system and certain endocrine tissues. Work deals with the biological function of TRH-like peptides in different parts of organisms where various mechanisms may serve for realisation of biological function of TRH-like peptides as negative feedback to the pituitary exerted by the TRH-like peptides, the role of pEEPam such as fertilization-promoting peptide, the mechanism influencing the proliferative ability of prostatic tissues, the neuroprotective and antidepressant function of TRH-like peptides in brain and the regulation of thyroid status by TRH-like peptides. © 2011 Institute of Physiology v.v.i., Academy of Sciences of the Czech Republic, Prague, Czech Republic.
Mocikova I.,FD Roosevelt Faculty Hospital |
Babela J.,Urology Clinic |
Balaz V.,Urology Clinic
Biomedical Papers | Year: 2012
Background. This article reviews the potential of magnetic resonance imaging (MRI) in prostate cancer diagnosis. Methods. Systematic scan of Pubmed, Ovid, Medline, Elsevier search engines was used, additional information was found through bibliographic review of relevant articles. Results. Substantial progress has been made in the imaging of prostate cancer in MR imaging, as well as in advanced MR spectroscopy. Conclusions. MRI is a non-invasive and direct imaging modality useful for cancer staging, therapy response, detection of recurrence and guided biopsy in previous negative biopsies. MRI with 3.0 T system, whole-body MRI, dynamic contrast enhanced MRI, diffusion-weighted imaging (DWI) and MR spectroscopy (MRS) have improved tumor staging, assessment of tumor volume, aggressiveness or recurrence. Implementation of endorectal/phased array superficial MRI findings on 1.5 or 3.0 T systems into nomograms for prostate pretreatment prediction is warranted. Surface phasedarray coil MRI accurately defines prostate cancer with elevated risk of extraprostatic disease.
Stenzl A.,University Hospital |
Burger M.,University of Regensburg |
Fradet Y.,CHUQ Hotel Dieu de Quebec |
Mynderse L.A.,Mayo Medical School |
And 6 more authors.
Journal of Urology | Year: 2010
Purpose We assessed the impact that improved detection of nonmuscle invasive bladder cancer with hexaminolevulinate fluorescence cystoscopy may have on early recurrence rates. Materials and Methods This prospective, randomized study enrolled 814 patients suspected of having bladder cancer at increased risk for recurrence. All patients underwent white light cystoscopy and mapping of lesions, followed by transurethral resection of the bladder when indicated. Patients in the fluorescence group also received intravesical hexaminolevulinate solution at least 1 hour before cystoscopy to induce fluorescence of cancerous lesions, and underwent additional inspection with blue light before and after transurethral resection of the bladder. Adjuvant intravesical therapy was based on risk. Followup cystoscopy at 3, 6 and 9 months was conducted with white light. Results Detection was performed as a within patient comparison in the fluorescence group. In this group 286 patients had at least 1 Ta or T1 tumor (intent to treat). In 47 patients (16%) at least 1 of the tumors was seen only with fluorescence (p = 0.001). During the 9-month followup (intent to treat) there was tumor recurrence in 128 of 271 patients (47%) in the fluorescence group and 157 of 280 (56%) in the white light group (p = 0.026). The relative reduction in recurrence rate was 16%. Conclusions Hexaminolevulinate fluorescence cystoscopy significantly improves the detection of Ta and T1 lesions and significantly reduces the rate of tumor recurrence at 9 months. © 2010 American Urological Association Education and Research, Inc.